It was great, but one thing you need to do is pay attention to detail a little more. Like when the helicopter flies with the doctor, theres a spawn point laying around. It's not a huge deal, but it looks really bad when the rest of you move is good.
I also think you need to work on the story, especially if you want this to be a series. If you don't have a good story line, it will just end up being receptive fights every episode, and probably get boring to most people, who will stop watching.